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    SEMICONDUCTOR DEVICE AND ELECTRONIC DEVICE
    12.
    发明公开
    SEMICONDUCTOR DEVICE AND ELECTRONIC DEVICE 审中-公开

    公开(公告)号：US20230369329A1

    公开(公告)日：2023-11-16

    申请号：US18142740

    申请日：2023-05-03

    Applicant: Semiconductor Energy Laboratory Co., Ltd.

    Inventor： Yoshiyuki KUROKAWA ,  Satoru OHSHITA ,  Hidefumi RIKIMARU

    IPC: H01L27/092 ,  H03M1/72

    CPC classification number: H01L27/092 ,  H03M1/72

    Abstract: A semiconductor device with low power consumption is provided. The semiconductor device includes a first layer and a second layer. The first layer includes a first cell and a first to a third circuit, and the second layer includes a second cell and a fourth and a fifth circuit. The first, second, and fourth circuits each have a function of converting digital data into analog current. The first cell calculates a product of a value from the first current and a value from the second circuit and inputs a calculation result into a third circuit as current. The third circuit generates analog current from the input current. The second cell calculates a product of a value from the third circuit and a value from the fourth circuit and inputs a calculation result into the fifth circuit as current. The fifth circuit generates analog current from the input current.

    OPERATION METHOD OF SEMICONDUCTOR DEVICE
    13.
    发明申请
    OPERATION METHOD OF SEMICONDUCTOR DEVICE 有权

    公开(公告)号：US20250078895A1

    公开(公告)日：2025-03-06

    申请号：US18727223

    申请日：2023-01-25

    Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

    Inventor： Hidefumi RIKIMARU ,  Yoshiyuki KUROKAWA ,  Satoru OHSHITA

    IPC: G11C11/405 ,  G11C11/4096 ,  G11C11/54 ,  H10B12/00

    Abstract: An operation method of a semiconductor device that performs data writing and correction processing is provided. The operation method is for a semiconductor device including a control circuit, a first circuit, a second circuit, a wiring, a cell, and a converter circuit. In the operation method, first, the control circuit transmits, to the first circuit, a first signal corresponding to the value of first data. Next, the first circuit outputs, to the wiring, a first current with an amount corresponding to the first signal. Moreover, the cell retains a first potential corresponding to the amount of first current. Then, the cell makes a second current corresponding to the first potential flow from the wiring, and the converter circuit outputs a second signal corresponding to the amount of second current. Next, the second circuit obtains a difference value between a value corresponding to the second signal and the value of the first data. If the difference value is 0, the operation is terminated. If the difference value is not 0, the control circuit generates an update value obtained by adding the difference value to a value corresponding to the first signal previously transmitted. The first circuit obtains the first signal corresponding to the update value and outputs the updated first current to the cell.

    SEMICONDUCTOR DEVICE
    14.
    发明公开
    SEMICONDUCTOR DEVICE 审中-公开

    公开(公告)号：US20240234310A1

    公开(公告)日：2024-07-11

    申请号：US18560959

    申请日：2022-05-13

    Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

    Inventor： Yoshiyuki KUROKAWA ,  Hiromichi GODO ,  Kazuki TSUDA ,  Kouhei TOYOTAKA ,  Satoru OHSHITA ,  Hidefumi RIKIMARU ,  Hideki UOCHI

    IPC: H01L23/528 ,  H01L29/24

    CPC classification number: H01L23/528 ,  H01L29/24

    Abstract: A novel semiconductor device is provided. In reservoir computing using an input layer, a reservoir layer, and an output layer, variation in threshold voltage between transistors is used as a weight used for product arithmetic processing. Two transistors are provided in one product arithmetic circuit and data u is supplied to gates of the two transistors. Drain current of each of the transistors is determined by the data u and the threshold voltage of the transistor. The difference between the drain currents corresponds to a product arithmetic result. The difference between the drain currents is converted into voltage to be output. A plurality of product arithmetic circuits are connected in parallel to form a product-sum arithmetic circuit.

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